1.   But if the receptor lets in negative ions, the downstream neuron is made more resistant to firing.

2.   If negative ions predominate, nothing happens.

3.   It is charged with negative ions which generate a feeling of well-being.

4.   Negative ions pass through a membrane containing positive ions more easily than through one that is neutral or negatively charged.

5.   The cell is already negative and so adding more negative ions just pushes the cell farther in an electrically negative direction.

6.   But in electrides, the electrons are the negative ions.

7.   Some people attribute this to negative ions in the air.

8.   Those negative ions generated by moving water also energize while soothing frayed nerves, fountain makers and feng shui experts say.

9.   Positive ions are associated with bad things, like dust and pollution, while negative ions are plentiful in refreshing places like a waterfall.

10.   A public bath in Osaka, central Japan, offers a tub brimming with negative ions to get blood circulation going strong.